The Hyperwear SteelBell is the most intense free weight ever created. Filled with tiny balls of steel shot, it is dense and incredibly lively challenging your core and stabilizers with every move. Think of the SteelBell as a medicine ball you can hold with one hand or a soft kettle bell with no handle needed. Choose the patented SteelBell® to improve performance and challenge muscles like never before. The SteelBell® is constructed from extra-thick neoprene with a super texture surface for grip improvement. The SteelBell is roughly half the size, per weight, of its SandBell® counterpart, but packs twice the dynamic punch. The SteelBell is the choice of NFL and other professional and college teams, the military, law enforcement, crossfit for slam balls and wall balls, and kettlebell enthusiasts.